2A4T

Crystal structure of spin labeled T4 Lysozyme (V131R7)

• PDB DOI: https://doi.org/10.2210/pdb2A4T/pdb

• Classification: HYDROLASE
• Organism(s): Tequatrovirus T4
• Expression System: Escherichia coli BL21
• Mutation(s): Yes 


• Deposited: 2005-06-29 Released: 2006-06-13 
• Deposition Author(s): Fleissner, M.R., Cascio, D., Sawaya, M.R., Hideg, K., Hubbell, W.L.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 0.215 
• R-Value Work: 0.179 
• R-Value Observed: 0.181 

Starting Model: experimental

Literature

Crystal structure of spin labeled T4 Lysozyme (V131R7

Fleissner, M.R., Cascio, D., Sawaya, M.R., Hideg, K., Hubbell, W.L.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 19.28 kDa 
• Atom Count: 1,616 
• Modelled Residue Count: 164 
• Deposited Residue Count: 164 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Lysozyme	A	164	Tequatrovirus T4	Mutation(s): 3  Gene Names: E EC: 3.2.1.17
UniProt
Find proteins for P00720 (Enterobacteria phage T4) Explore P00720  Go to UniProtKB:  P00720

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
R7A	B [auth A]	S-[(4-bromo-1-oxyl-2,2,5,5-tetramethyl-2,5-dihydro-1H-pyrrol-3-yl)methyl] methanesulfonothioate C10 H17 Br N O3 S2 KUZFUMWORONOQW-UHFFFAOYSA-N
HED	G [auth A]	2-HYDROXYETHYL DISULFIDE C4 H10 O2 S2 KYNFOMQIXZUKRK-UHFFFAOYSA-N
AZI	C [auth A]	AZIDE ION N3 IVRMZWNICZWHMI-UHFFFAOYSA-N
CL	D [auth A], E [auth A], F [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 0.215 
• R-Value Work: 0.179 
• R-Value Observed: 0.181 
• Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 59.807	α = 90
b = 59.807	β = 90
c = 95.58	γ = 120

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-06-13 
Deposition Author(s): Fleissner, M.R., Cascio, D., Sawaya, M.R., Hideg, K., Hubbell, W.L.

Revision History  

• Version 1.0: 2006-06-13
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2012-02-29
  Changes: Other
• Version 1.4: 2017-10-11
  Changes: Advisory, Refinement description
• Version 1.5: 2023-08-23
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.6: 2024-10-30
  Changes: Structure summary